[Nets-seminars] Talk today in UCL Electronic Engineering
Richard G. Clegg
richard at richardclegg.org
Fri Nov 9 11:48:50 GMT 2012
Don't forget today's talk -- it is in the Barlow Room (807) not the
usual room. The speaker is Maria Martini from Kingston University:
Quality-driven wireless multimedia
Audiovisual systems are becoming more and more complex and new
possibilities of presenting content are available, including augmented
reality and immersive environments. In this framework, user requirements
are not limited anymore to requirements on connectivity, but users
expect services to be delivered according to their quality demands.
However, for wireless systems the possible limitations due to the
characteristics of the transmission channel and of the devices can
result in perceivable impairments, originated in the different steps of
the value chain from content production to display techniques, that
influence the user’s perception of quality.
In recent years, the new concept of quality of experience (QoE) has been
defined, where the QoE concept differs from quality of service (QoS) in
that more than on the performance of the network, the focus is on the
overall experience of the consumer accessing and using the provided
services. Objective, rather than subjective, QoE evaluation enables user
centric design of novel multimedia systems, through an optimal use of
the available resources based on such objective utility index.
The seminar will focus on the need for objective evaluation of video
quality and quality of experience for an effective design of wireless
multimedia systems. Quality metrics recently developed by the author
together with the members of the Wireless Multimedia Networking research
group in Kingston University will be presented, together with some
examples of their usage in a cross-layer, QoE-driven system design, such
as in the recent OPTIMIX and CONCERTO EU projects.
Maria G. Martini is a Reader (Assoc. Prof.) in the Faculty of Science,
Engineering and Computing in Kingston University, London, where she also
leads the Wireless Multimedia Networking Research Group.
She received the Laurea in electronic engineering (summa cum laude) from
the University of Perugia (Italy) in 1998 and the Ph.D. in Electronics
and Computer Science from the University of Bologna (Italy) in 2002.
She is has led the KU team in a number of national and international
projects, funded by the European Commission, UK research councils and
international industries.
An IEEE Senior Member, she is a (guest) editor and reviewer for
international journals and she has been in the organising and programme
committee of several international conferences. She has recently served
as lead guest editor for the IEEE JSAC special issue on QoE-aware
wireless multimedia systems, for the Int. Journal on Telemedicine and
Applications, and for the JCNC special issue on Improving QoS and QoE
for Mobile Communications. She was general chair of the ICST/ACM
MOBIMEDIA 2009 conference and of EUMOB 2008. She has organised the IEEE
Workshop on Streaming and Media Communications (ICME 2011) and the First
International Workshop on Cross-Layer Operation Aided Multimedia
Streaming (IEEE VTC 2011). She coordinated (2008-2010) the edition of
the Strategic Applications Agenda (SAA) on mobile health and inclusion
applications in the eMobility European Technology Platform. She is part
of international committees and expert groups, including the IEEE
Multimedia Communications technical committee (key member 2010-2012 for
QoE and multimedia streaming) and the Net!Works European Technology
Platform expert group.
Her research interests include wireless multimedia networks, cross-layer
design, joint source and
channel coding, 2D/3D error resilient video, 2D/3D video quality
assessment, and medical
applications. She is the author of over 80 international scientific
articles and book chapters, and the inventor of several patents on
wireless video.
--
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/
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